Add support for Remote Desktop Services (RDS).

ipt-firewall-gateway

@@ -4705,6 +4705,36 @@ else
 fi
 
 
+# ---
+# - Remote Desktop Dienste (RDS)
+# ---
+
+echononl "\t\tRemote Desktop Dienste (RDS)"
+
+
+if [[ ${#rds_server_ip_arr[@]} -gt 0 ]]; then
+   for _ip in ${rds_server_ip_arr[@]} ; do
+
+      $ipt -A OUTPUT -p tcp -d $_ip --dport $rds_server_tcp_port -m conntrack --ctstate NEW -j ACCEPT
+      
+      if $kernel_activate_forwarding && ! $permit_between_local_networks ; then
+         $ipt -A FORWARD -p tcp -d $_ip --dport $rds_server_tcp_port -m conntrack --ctstate NEW -j ACCEPT
+
+         # - Rule is needed if (local) interface aliases in use (like eth0:1)
+         # -
+         if $local_alias_interfaces ; then
+            $ipt -A FORWARD -p tcp -d $_ip --dport $rds_server_tcp_port --tcp-flag ACK ACK -j ACCEPT
+            $ipt -A FORWARD -p tcp -s $_ip --sport $rds_server_tcp_port --tcp-flag ACK ACK -j ACCEPT
+         fi
+      fi
+   done
+
+   echo_done
+else
+   echo_skipped
+fi
+
+
 # ---
 # - Munin Service Gateway
 # ---